What are frequent causes of liquid water intrusion in basements and crawl spaces?

Liquid water intrusion in basements and crawl spaces is often caused by faulty grading and drainage systems. Proper grading directs water away from the foundation, while efficient drainage systems ensure that water does not accumulate around the home. When these systems fail, either due to improper design, maintenance issues, or environmental changes, water can flow into lower parts of the structure, leading to various problems such as mold growth, damage to insulation, and structural deterioration.

Effective grading should slope away from the foundation and drainage systems like gutters and downspouts must be functional to channel water safely away. Without these measures in place, it becomes easy for groundwater or surface water to penetrate the building, creating ongoing issues. This highlights how crucial proper grading and drainage are in preventing water intrusion and maintaining the integrity of basements and crawl spaces.